Lanturn is known to emit light. If you peer down into the dark sea from a ship at night, you can sometimes see this Pokémon’s light rising from the depths where it swims. It gives the sea an appearance of a starlit night. It blinds prey with an intense burst of light. With the prey incapacitated, the Pokémon swallows it in a single gulp. Lanturn’s light can shine up from great depths. It is nicknamed “The Deep-Sea Star.”
Pokédex entry #171
Lanturn in Pokémon GO
It's possible to hatch Lanturn from an egg?
No, Lanturn can't be hatched.
Which are Lanturn’s strengths and weaknesses?
Lanturn is a electric and water type Pokémon. electric type pokémons are strong against water, flying pokémons but weak against electric, grass, dragon pokémons. They are not affected by ground type pokémons. water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.